Three-point contact-trolley timer for internal-combustion motor-cars.



PATENTED NOV. 12,1907.

0. M. HURLEY; I THREE POINT CONTACT TROLLBY TIMER on INTERNAL COMBUSTION MOTOR CARS.

-. APPLIOATIOI rum) un.4.1ao1.

III:

' is only adapted for a four-cylinder engine.

GEORGE M. HURLEY, OF LOS ANGELES, CALIFORNIA.

THREE-POINT CONTACT-TROLLEY TIMER'FOR INTERNAL-COMBUSTION MOTOR-CARS.

Specification of Letters Patent.

Patented Nov, 12, 1907.

Application filed April 4.1907. Serial No. 366.442.

To all whom it may concern:

Be it known that I, GEORGE MARCUS .l'lunnnv, a citizen of the United States, residing at Los Angelcs, in the county of Los Angeles and State of California, have iiivenied a new and useful Three-Point Contact-Trolley Timer for Internal-Comlnistion Motor-Cars, of which the following is a specification.

An object of this invention is to provide means for positively assuring the production of the electric spark for igniting the charges in the cylinders of internal combustion engines actually at the period desired.

A further object is to so construct the timer that it will operate to cause effective electrical contact invariably at the time required regardless of ordinary Wear and tear, and also regardless of any looseness of parts which may occur through excessive or other wear on the insulating ring, hearing or base of the timer.

The accompanying drawings illustrate the invention.

Figure 1 is a view of my newly-invented timer de-' iached, looking into the insulatingring, the contactirolley being shown in position to Contact with one of the contactpoints. The timer illustrated in this view Fig. 2 is a section on line fi-x'i Fig. 1. Fig. 3 is an enlarged detail illustrating different positions that may be assumed by the contact-trolley in case ,of worn parts; solid lines in this view show one position, and dotted lines indicate another.

l, 2, 3, 4 designate contact-points projecting slightly beyond the inner face of the insulating ring 5 of fiber or other suitable insulating material.

6 is the rotating arbor carrying a springpressed arm 7 which is provided at one end with a contact-trolley 8. The trolley is mounted in a yoke 9 provided on the end of the springpressed arm 7, and is in the nature of a V shaped roller journalcd in the yoke 9. The central portion, a of the trolley-roller is flat to correspond with the flat surface 10 of the projecting edge 11 of the lip formed on the interior of ihe insulatingring 5. The spring 12 for normally holding the trolley in engage ment with the lip of lhe insulating-ring 5 is housed in a shell or casing l3 which is titled in the opening 14 provided in the end of the arbor and secured therein by a screw l5 extending through the arbor and impinging against the said shell. The shell is slotted, as seen at 16, for the purpose of accommodating the lug 17 provided on tho end of the arm 7 and guides the said arm in the sleeve when the same is caused to be depressed against the tension of the spiral spring 12. p

In pracl the base I) for the insulating ring 5 will be made originally lo it the arbor 6, on which said base is rcvolubly mounted, as shown in Fig. 2, but in time the bearing of the base on said arbor will become worn to a greater or less extent, as indicated in Fig. 3. In such cast.- a wuhbling motion is set up a; times in the base, as indicated by the dotted lines in said Fig. 3.

By reason of my improvement, such wabbling motion shaped trolley will po itively engage some one of the three faces of the contact-points whenever the trolley passes such points.

20 designates the usual arm on the base for turning the same on the arbor to advance or retard the spark.

21 is an eye for the connecting-rod, not shown, for 0pcration by the operator of the car.

It is to be understood that although I have shown-a timer for a four-cylinder engine, the invention is applicable for use with 2, 4, 6, B-cylinder, or othermultiple engines; the change being simply in the number of contacts arranged around the insulating-ring.

What I claim is:

1. An annular insulatingring having an annular intPriorly-projecting beveled lip provided at intervals with one or more contact points projecting slightly beyond the terminus of the lip, an arbor, a trolley mounted on said urbor and arranged to travel about said projecting lip at different times to engage the contact faces on said lip.

2. An arbor, a base rcvolubly mounted on said arbor, an insulating ring on said base having an interior annular bevel lip. whose edge is flat, said ring being provided with coiitact-polnts projecting beyond the face of said flat edge. an arm on said arbor, and a V-shaped roller carried by said arm and engaging the flat edge of the lip.

3. An nrbor, n base revoiubly mounted on said arbor. an insulating ring on said base having an interior annular bevel lip. whose edge is flat, said ring being provided with contact points projecting beyond the face of said flat edge, an arm on said arbor, a V-shaped trolley carried by said normally holding said trolley in engagement with said lip.

4, An arbor, a base revolubly mounted on said arbor, an insulating ring on said base having an interior bevel lip whose edge is flat, said lip being provided with contact points projecting beyond the face of said flat edge, an arm on said :irbor, a trolley carried by said arbor and arranged io engage the said lip and travel around the flat face of the same, a spring for normally holding said trolley in engagement with said lip, and a casing for said spring, said casing being secured to said arbor.

5. An arbor, a base revolubly mounted on said arbor, an insulating ring on said base having an interior bevel lip whose edge is flat. said lip being provided with contact points projecting beyond the face of said ilat cdgc, an arm on said arbor terminating in :1 yoke, a trolley journaicil in i, said yoke, :nid arranged to engage the ilat face oi said l l' Pl, a spring for normally holding said trolley in engagement with said ilul: face, a casing for said spring, and means for securing: said casing in said arbor.

ll. .ln arbor, a hase-revolubly mounted on said arboix un insulating ring on said base huvin'g an interior bowl lip whose edge is ilni. said lip being provided with contact points projecting beyond the face of said flat ode-o. a ens in i-arried by s d arbor. said casing having u slot. :1 in said casing, an arm provided with :i in; curried by said arbor and arranged to ill said casing, said lin: hcin! arranged to slide in the slot oisaid casing, trolley mounted on said arm und arranged to ong'uu'c said iizii edu or said lip. and moans for rcumvubly securing said cusinu' in said arbor.

T. A lll i'idpoitli contact trolley-timer for illliliilill COHllmstion motor-curs, minrisin on arbor. :in insulating does not interfere with the sparking action, as the V arbor and engaging the flat edge of the lip, and means for rinp; having a V-shaped lip, contacts having V-shaped curls, and V-shapcdtrollcy yieldingly mounted on said arbor to run on said V-shaped' lip-and adapted to contact at any of the three contact-points on said V-siraped contarts, substantially as and for the purpose set forth.

S An orb or, a base revoiubly mounted thereon, an insulating liilg on said base having an interior annular beveled lip, conluci' points in the face of said lip, an arm on said" N arbor, angia V-shaped roller-carried by said arm and engaging; the edge of the lip.

9."An arbql', a base revolubly mounted on said arbor, an 7 iusuiaiing ring on said base having an interior annular" bcvclcd lip and pro'iiided with contact points in 'the face of said lip. an arm on said arbor, a- V-shaped trblley carried by sairlmrboi and'engaging the lip and means for normally holding said trolley in engagement with'said lip.

10. An arbor a base revolublymounted on said arbor;

an insulating ring on saidwbase h'hving an interior beveled lip and provided with contact points in said lip, a trolley' yoke and arranged to engase said lip and contact points,

snring a spring for normally holdfiig said trolley in such engageinent, a. casing for said spring, and means for securing said casing in said arbor. v I

12. An arbor, 31 base revolubly mounted on said arbor. an insulating ring on said base having an interior beveled lip providedwith contact points, a casing carried by said' arbor and provided with a slot, aspring in said using, an arm provided with a lug carried by said arbor end a'rramgcd to fit said casing and to slide in the slot thereof, a V-shaped trolley mounted in said arm and arranged to engage said lip and contact points, and means'tor movabiy' securing said casing'in said arbor.

, 13. A three point contact trolley ti'mer for internal coulbustion' motor cars, comprising an arbor, an insulating ring having a beveled lip, correspondingly beveled contacts in said lip, and a V-shaped trwlley yieldingly mounted on said arbor to run on sa-id beveled liymmd adapted to contact at any of the contact points.

ing an internal lip, contacts in said lip,.and a V-shaped trolley yielding'ly mounted to run on said lip and contact with said contacts at a plurality of points.

in testimony whereofi'I have hereunto set my hand at llos Angeles California this 25th day of March 1907.

GEORGE M. HURLEY.

In presence of- Jmms R. '.I.O,\VNSEND, M. BEULAH TOWNSEND.

14. A trolley timer,'comprising an insulating ring hav- 

